Planetary hours
in San Miguel de Tucumán.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Friday, 18 December 2026: day of Venus
- Sunrise
- 06:22
- Sunset
- 20:12
- Next sunrise
- 06:23
A day hour lasts 1h 09m; a night hour, 51 min. Local time (America/Argentina/Tucuman).
Day
- 1♀︎ Venus06:22 – 07:31
- 2☿︎ Mercury07:31 – 08:40
- 3☽︎ Moon08:40 – 09:50
- 4♄︎ Saturn09:50 – 10:59
- 5♃︎ Jupiter10:59 – 12:08
- 6♂︎ Mars12:08 – 13:17
- 7☉︎ Sun13:17 – 14:26
- 8♀︎ Venus14:26 – 15:35
- 9☿︎ Mercury15:35 – 16:44
- 10☽︎ Moon16:44 – 17:54
- 11♄︎ Saturn17:54 – 19:03
- 12♃︎ Jupiter19:03 – 20:12
Night
- 1♂︎ Mars20:12 – 21:03
- 2☉︎ Sun21:03 – 21:54
- 3♀︎ Venus21:54 – 22:45
- 4☿︎ Mercury22:45 – 23:35
- 5☽︎ Moon23:35 – 00:26
- 6♄︎ Saturn00:26 – 01:17
- 7♃︎ Jupiter01:17 – 02:08
- 8♂︎ Mars02:08 – 02:59
- 9☉︎ Sun02:59 – 03:50
- 10♀︎ Venus03:50 – 04:41
- 11☿︎ Mercury04:41 – 05:32
- 12☽︎ Moon05:32 – 06:23
Other cities · Argentina
Questions
How are the planetary hours calculated in San Miguel de Tucumán?
On Friday, 18 December 2026, the Sun rises at 06:22 and sets at 20:12: the day lasts 13h 50m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 06:23, lasts 10h 11m: twelve night hours of 51 min.
Which planet rules the first hour that day?
Venus, from 06:22 to 07:31: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.